Lakoko ilana iṣelọpọ lojoojumọ, nitori ti ogbo ti ileru sintering, monomono nitrogen, jijẹ amonia ati awọn ohun elo miiran, awọn ọja irin lulú lulú lẹhin ileru ni ọpọlọpọ awọn iṣoro ifoyina bi blackening, yellowing, decarburization, and sandblasting on t. ..
Ka siwaju